Clean up certificate viewer in RTL mode.

This makes two improvements to the certificate viewer in RTL mode:
 1. All text is now right-aligned, even English text, for consistency
    and easy scanning.
 2. The certificate name no longer overlaps the dropdown arrow.

BUG=548156

Review URL: https://codereview.chromium.org/1409023005

Cr-Commit-Position: refs/heads/master@{#356464}
1 file changed